who could ever sue you? That's like a crime against humanity :P
I'm guessing so long as you don't claim its official merchandise and don't sell it by the hundreds they will leave you alone but 2.4K is an awful lot.

It comes under artistic license. I bet if this person was mass producing them, they'd have a problem, but they sell as high as they do because A) people are willing to buy them for that much and B) handcrafted, one of a kind.